Reading Mozilla's Color Coding in 'view source'

I understand what green (comments) black (attribute) blue (value) red (end tag) and Purple (tags), but wth does pink mean? I tried some php injection on a website and my injected php wasn't visible on the page after it was reloaded, but when I viewed the source it was in the source where i injected it but it was pink?

Any Idea?

"Never memorize what you can look up in books." -Albert Einstein
[img]http://www.hellboundhackers.org/fusion_infusions/buddy_panel/buddy_delete.php?id=2783[/img]